/**
 * Copyright (C) 2012 Oleg Anastassov <o.anastasov@gmail.com>
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package kz.kstu.ent.desktop.util.health;

import java.awt.*;
import java.lang.reflect.UndeclaredThrowableException;

/**
 * @author Oleg Anastassov
 */
public class EventQueueProxy extends EventQueue {

    private static final int FULL_DISPOSED = 0;

    private static final int CAPTURED = 2;

    private static final int SEMI_DISPOSED = 1;

    private static int state;

    /**
     * {@inheritDoc}
     */
    protected void dispatchEvent(AWTEvent newEvent) {
        try {
            super.dispatchEvent(newEvent);
        } catch (Throwable t) {
            //avoid recursion deadlock
            if (getState() == FULL_DISPOSED) {
                setState(CAPTURED);
                try {
                    DefaultErrorHandler.handleError(t);
                } finally {
                    setState(SEMI_DISPOSED);
                }
                setState(FULL_DISPOSED);
            } else {
                if (getState() == SEMI_DISPOSED) {
                    setState(FULL_DISPOSED);
                }
                if (RuntimeException.class.isAssignableFrom(t.getClass())) {
                    throw (RuntimeException) t;
                }
                throw new UndeclaredThrowableException(t);
            }
        }
    }

    private static synchronized int getState() {
        return state;
    }

    private static synchronized void setState(int state) {
        EventQueueProxy.state = state;
    }
}

